A wastewater treatment system including an organic water-collection tank configured to receive and store wastewater as raw water, a first denitrification tank configured to convert the raw water into primary treated water a nitrification tank configured to convert the primary treated water into secondary treated water, a second denitrification tank configured to receive an organic carbon source from a carbon supply unit and to convert the secondary treated water into tertiary treated water, a re-aeration tank configured to convert the tertiary treated water into a quaternary treated water, a sedimentation tank configured to separate the quaternary treated water into sludge and supernatant, a wastewater analysis unit configured to analyze information from the wastewater, and a control unit configured to calculate and control a supply amount of the organic carbon source using the wastewater information.

The present invention relates to a composite treatment and recovery technique of polluted water body and soil. Iron-rich straw biomass, after being crushed, is mixed and granulated with sludge, and is pyrolytic charred by programmed heating, to obtain bulk loaded zero-valent iron biochar and sludge biochar composite particles, which are packed as fillers in a filled bed or as filters in filter cells of a fixed bed, for effective recovery of complex polluted water, polluted by heavy metals, organics, nitrogen, phosphorus, and the like.

A biologically active sorptive media is disclosed for sustainable contaminant removal in, for example, stormwater management systems. This technology addresses the technical problem of hydrophilic trace organic contaminants and dissolved-phase nutrients passing through conventional stormwater infrastructure, posing risks to groundwater and surface water quality. The biologically active sorptive media comprises a biopolymer matrix formed from alginate hydrogel, encapsulating sorbent materials (e.g., powdered activated carbon (PAC), iron-based water treatment residuals (FeWTR]), growth substrates (e.g., wood flour), and biodegrading organisms (e.g., white rot fungi). These beads enable rapid sorption of contaminants during storm events and subsequent biodegradation during inter-storm periods, renewing sorption capacity. The beads are mechanically robust, scalable, and stable for extended periods in high ionic strength solutions. Applications include bioaugmentation of green stormwater infrastructure (GSI), wastewater treatment, and bioremediation. This approach transforms GSI science by coupling sorption and biodegradation for enhanced contaminant removal.

The present disclosure discloses a method for removing TBBPA in water, a microbial strain and a microbial agent, wherein the microbial strain is a domesticated Burkholderia cepacia strain, which is named Y17 with a conservation number GDMCC No. 62153. The microbial agent and the method for removing TBBPA in water with the microbial agent are that Y17 strains are colonized on the surface and pore channels of biochar, TBBPA in water is used as a carbon source, air and dissolved oxygen are used as oxygen sources, biochar provides the strains a growth microenvironment for degrading TBBPA in water, the strains are subjected to aerobic growth in water, and bio-enhanced degradation of TBBPA in water is performed by continuously degradation reaction. The removal method and the microbial strain as well as the microbial agent are high in degradation efficiency, environmental-friendly and low in cost, and can meet requirements on large-range promotion and application.

An enhanced activated sludge system for removing PFAS from a flow of wastewater and/or landfill leachate includes at least one bioreactor configured to receive a flow of wastewater and/or landfill leachate and configured to promote growth of biological flocs. The at least one bioreactor mixes the biological flocs with a particulate media to form biological flocs enmeshed with the particulate media which adsorb and remove a majority of the PFAS from the flow of wastewater and/or landfill leachate and outputs a flow of biological flocs enmeshed with the particulate media having the majority of PFAS adsorbed thereto and treated wastewater and/or landfill leachate having a majority of the PFAS removed. A separation subsystem separates the biological flocs enmeshed with the particulate media having the majority of PFAS adsorbed thereto from the treated wastewater and/or landfill leachate and outputs a flow of treated wastewater and/or landfill leachate having a majority of the PFAS removed.